Desulfurizing-furnace.



R. Hi'IBNER. DESULFURIZING FURNACE. APPLICATION FILED DBO.18, 1906.

2 SHEETS-SHEET 2.

Patented Sept. 22, 1908.

wiry/5385s I ATTORNEYS UNITED ROBERT HUBNER, OF NEW YORK, N. Y.

DESULFUBIZING-FURNAGE.

Specification of Letters Patent.

Patented Sept. 22, 1908.

Application filed December 18, 1906. Serial No. 343,453.

To all whom it may concern:

Be it knovm that I, ROBERT Ht BNER, a subject of the Emperor of Germany, and resident of the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Desulfurizingd urnaces, of which the follow ing is a specification.

My invention relates to furnaces for desulfurizing ores, and has for its object to provide a com act-and efiicient construction for enabling a arge amount of ore to be desulfurized in successive stages, until the desired degree of perfection has been attained.

The invention will be fully described hereinafter, and the features of novelty pointed out in the appended claims;

Reference is to be had. in the accompanying drawings in which Figure '1' is'alongitudinal vertical section of my improved furnace; Fig. 2 is a cross section thereof on line 22 of Fig. 1; and Fig.3 is a horizontal section of part of the furnace on line 3 3 of Fig. 2.

The furnace comprises a setting A of brickwork or other suitable construction, provided with a grate B, above which is located a combustion chamber 0. From this combustion chamber a flue D leads rearward, communicating with an upward flue E, from which a number of flues E, E, E lead forward at different levels to connect with the stack or chimney, indicated at E. Theflues E E are preferably subdivided into a number of channels by partitions, asinFig. 2. In order that the path of the combustion gases may be varied, I have provided'dampers F, F, F, the first located at the outlet of the flue E, the second controllingthe connection of the fines E and E with the stack E and the third interposed in the upward flue Ebetween its connections with the horizontal flues E and E. In the particular arrangement of the dampers shown in- Fig. v1, the combustion gases pass from the chamber C to the flue l), the-lower art of the flue E, then forward through the no E upward into the flue E and rearward in the same, upward in the upper ortion of the flue E and forward to the stac E", through the uppermost flue E The top H of the fine D preferably consists of metal and forms a floor on which the ore to be treated is adapted co-rest. Similar floorsare indicated at H, H H immediately above the flues E, E E and two further floors H, H are located in the upper part of the furnace. The floors may be supported in any suitable manner, as by means of brackets G, which I referto provide with openings G, so that t e gases may circulate and stagnation may be avoided. Between each of the floors above mentioned and the ceiling above is formed an ore chamber I, I, I, I I, I respectively. The ceiling for the chambers I, I, I", is formed by the bottom wall of the flues E, E E respectively; the ceiling for the chamber I is formed by the bottom H"; the ceiling for the chamber I is formed by the bottom H and the ceiling for the chamber I by the top wall of the setting A. r

A filling opening through which ore may be introduced into the uppermost chamber I is indicated at J in Fig. 2. At the opposite end, said chamber has a passage J lead ing to the chamber I below. This assage may be closed by means of sliding l By means of further openings J and J, and other plugs 1K, similar to those above mentioned, a connection is established from each chamber to the next chamber below, until the. chamber I is reached. This chamber can be made to communicate with the lowermost chamber I by means of passages J J located in the walls of the setting A and not within the chambers themselves. The plugs K not only close the openings through which communication is provided from one chamber to the next, but also close openings leading to the outside of the furnace, so that by removing one or more of the lugs access may be had to each of the chamers from the outside, for the purpose of introducing or removing ore, or of stirrin the ore by means of suitable tools. As wil be seen in Figs. 2 and 3, the plugs K fit between the brackets G, so that said brackets and plu s together close the openings such as J. T he chambers I, I, I 1 have been shown provided with exhaust passages L, adapted to be connected with a centrifu a1 pump or other machine by means of whic gases may be withdrawnfrom the ore chambers and the pressure within such chambers reduced to a oint' below atmospheric pressure. I have ound that the reactions are facilitated considerably by the use of a pressure below atare provided for the two uppermost chambers 1 and I, but these connections may be straight, whereas the connections L are bent to clear the flue E. i

In operation, the ore is first introduced into the chamber 1 and after having been treated there for a suitable length of time, is transferred to the chamber 1 by simply taking out the plugs K which register with the openings J", causing the ore to fall through said opening and spreading it on thefloor H. The process is continued in stages, the material being transferred from one ch mber to the next chamber below after a sui able interval of time, and. the reaction is made more energetic by the use of an exhaust, as above referred to.

In some cases it may not be necessary to have the ore treated in all of the chambers, since some ores might be sufficiently desulfurized by the time they reach the chamher I. For this reason, there are openings at both sides of the chamber 1, as shown in Fig. 2, so that the ore can be pushed out at one side by means of a tool inserted at the other side.

It will be observed that the path of the combustion gases from the chamber C is entirely separate from the ore chambers; that a is, the ore is nowhere exposed directly to the combustion gases, but only to the heat of such gases transmitted through the walls of the furnace and of the chambers. By means of the dam ers F, F, F I may regulate the heating e ect. For instance, by opening the damper F while leaving the other two in the position shown, the heat would be caused to travel direct through the upper flue E so as to insure a more energetic heating 'of the chambers 1 I", 1 This might be done at the beginning of the operation. Then, as the ore reaches the chamber 1, the dampers might be so manipulated as to cause the combustion gases to pass through the fiues E and E By swinging the damper F against the downtake at the forward end of the flue E (while leavingthe other dampers, or at least the damper F in the osition shown in Fig. 1), the hot gases would be made to pass from the flue E direct to the chimney or stack E through the lower flue E exclusively.

The process herein referred to is described more fully, and claimed in a companion application file'd of even date herewith.

I claim as my invention:

1. A desulfurizing furnace provided with a series of heat-conducting bottoms located at different levels, upperwalls above said bottoms-to form ore c iambers, means for heating said chambers, and brackets, contained withinsaid chambers, for supporting the upper walls.

2. A desulfurizing furnace provided with a series of heat conducting bottoms located at different levels, upper walls above said bottoms to form ore chambers, means for heating said chambers, and brackets, contained. within said chambers, for supporting the upper walls, said brackets having openings to prevent the trapping of gases.

3. A desulfurizing furnace provided with a series of superposed ore chambers with openings or channels through which the material may pass from one chamber to the next chamber below, and additional openings leading from each chamber to the outside of the furnace, movable means each ofwhich is arranged to close both kinds of openings, and means for heating the ore chambers. 4. A desulfurizing furnace provided with a series of superposed ore chambers with openings or channels through which the material may pass from one chamber to the next chamber below, and additional openings leading from each chamber to the outside of the furnace, the lowermost chamber having such additional openings in opposite walls, movable means each of which is arranged to close both kinds of o enings, and means for heating the ore cham ers.

,5. A desulfurizing furnace provided with a series of ore chambers, movable devices for isolating any one of said chambers from its neighbors, and a separate exhaust channel leading from each chamber to the outside of the furnace.

6. A desulfurizing furnace provided with a series of ore chambers, and a separate exhaust channel leading directly from each chamber.

7. A desulfurizing furnace rovided with a series of superposed ore cham ers with channels through which the material may pass from one chamber to the next chamber below, andopenings located adjacent to said channels and leading from each chamber to the outside of the furnace, and movable devices each of which is arranged to control one of said channels as well as one of said openlngS.

8. A desulfurizing furnace provided with an ore chamber having a channel for the dischar e of the material, 'andan opening locate adjacent to said channel and leading to the outside of the furnace, and a movable plug arranged to control both said channel and said opening.

9. A desulfurizing furnace provided with an ore chamber having a channel for the discharge of the material and brackets or guides projecting across said channel, and devices movable between said guides and adapted to close said channel.

10. A desulfurizing furnace provided with an ore chamber having a channel for the dis charge of the material, brackets or guides projecting across said channel, openings eading to the outside of the furnace and l cated in line with the spaces between the guides, in combination with plugs arranged end of said flue, superposed flues extending to slide between said guides and controlling forward from said uptake, a stack or chimboth said channel and the openings. ney located adjacent to the front ends of said 11. A desulfurizing furnace provided with fines and connected with a plurality of them, 25 a combustion chamber, a series of substan; a damper located in the uptake betweenits tially horizontal lines located at different connections with two of said fiues, a second levels and connected with the combustion uptake connecting said two flues adjacent to chamber, a stack or chimney with which a. the chimney, another damper for connecting plurality of said fluesmay be connected dithe lower one of said two flues either with 30 rectly, an upward connection from one flue said second uptak'e or directly with the chimto the next flue above, said connection being ney, and a third damper controlling the conlocated adjacent to said stack, a damper nection of the uppermost flue with the chimwhich according to its position connects the ney.

lower one of the two lines either directly In testimony whereof I have signed my 35 with the stack or with the said upward conname in the presence of two subscribing witnection, and ore chambers arranged to be nesses heated by the gases passing through said flu ROBERT HUBNER.

12. A desulfurizing furnace provided with Witnesses: I a combustion chamber, a flue extending JOHN LOTKA,

rearward therefroni, an uptake at the rear JOHN A. KEHLENBEGK. 

